RKS1E221MCNAJJGS

The RKS1E221MCNAJJGS is a surface-mount conductive polymer aluminum electrolytic capacitor in Nichicon's RKS series, rated at 220 µF and 25 V. It is designed for general-purpose electronics requiring high capacitance in a compact SMD radial can (φ10 × 10 mm).

Engineered for elevated operating temperatures and sustained ripple handling, it delivers low ESR and a long endurance profile suitable for power filtering and decoupling in demanding industrial and commercial applications.

Key Features

• Capacitance & tolerance — 220 µF with ±20% tolerance at 20°C, 120 Hz, providing substantial bulk capacitance for smoothing and energy storage.
• Rated voltage — 25 V DC rating for mid-voltage power rails and converter outputs.
• Low ESR — 20 mΩ measured at 20°C and 100 kHz, enabling efficient high-frequency performance and reduced power loss.
• High allowable ripple current — 200 mA at 120 Hz (low frequency) and 2 A at 300 kHz (high frequency), supporting high ripple and switching environments.
• Loss angle (tan δ) — 0.12 measured at 20°C, 120 Hz, indicating low dielectric losses for improved efficiency.
• Leakage current — 275 µA (typical product specification) after rated voltage application.
• Temperature & endurance — Operating range −55°C to +125°C with a rated load life of 3000 hours at 125°C.
• Package & packing — SMD radial can, size φ10 × 10 mm, supplied in embossed carrier taping with moisture-proof packing for automated placement.
• RoHS compliance — The RKS series is listed as compliant with RoHS directives in the series datasheet.

Typical Applications

• Power-supply decoupling — Bulk and high-frequency decoupling on DC‑DC converter outputs, leveraging low ESR and high ripple capability to stabilize rails.
• Switch-mode power supplies — Energy smoothing and ripple attenuation in SMPS designs where high allowable ripple current and thermal endurance are required.
• Industrial electronics — Filtering and energy storage in industrial control and instrumentation equipment operating across −55°C to +125°C.

Unique Advantages

• High ripple tolerance: 2 A high-frequency ripple rating and low ESR (20 mΩ @100 kHz) reduce heating and support switching regulator service.
• Extended temperature endurance: Rated for −55°C to +125°C with 3000 hours at 125°C, providing long-term stability in elevated-temperature environments.
• Compact SMD can: φ10 × 10 mm radial SMD package offers significant capacitance in a space-efficient footprint for automated assembly.
• Low loss performance: tan δ of 0.12 at 20°C/120 Hz and controlled leakage current (275 µA) help maintain efficiency and predictable behavior in circuits.
• Production-ready packaging: Embossed carrier taping and moisture-proof packing simplify surface-mount assembly and handling.

Why Choose RKS1E221MCNAJJGS?

RKS1E221MCNAJJGS positions itself as a robust SMD conductive polymer aluminum capacitor for designers needing high capacitance, low ESR, and reliable ripple handling in a compact radial can. Its 25 V rating, 220 µF capacitance, and documented endurance at 125°C make it suitable for sustained operation in power delivery and filtering roles.

This part is well suited for engineers and procurement teams specifying components for industrial and commercial electronics where thermal endurance, automated assembly packaging, and consistent electrical performance are priorities. The RKS series' documented RoHS compliance and manufacturing-ready taping add practical value during design and production.

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